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111_數A_混合題
Author:
Wu Xiao-Ren
GeoGebra
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兩組對邊相等的四邊形
兩位數除以一位數（一）
找出對稱軸
四邉形 (四年級) 教師版
異分母分數減法
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Reflectional Symmetry 反射對稱
三角形探究1
Triangle (Angle)
第五組-畢氏定理
鉛筆畫圓
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Circle
Multiplication
Numbers
Root
Sine